Question

The evidence that the transformation as described by Griffith’s experiments was due to DNA:

Options

• was found by Avery in the laboratory.

• proved that neither enzymes that break down proteins or RNAase that digests RNA could not prevent transformation.

• DNAase caused the digestion of the transforming substance.

• all of the above.

Answer 1

all of the above.

Explanation:

Avery and his team conducted a series of laboratory experiments that systematically proved DNA was the transforming substance. They showed that enzymes which destroy proteins or RNA could not stop the transformation process, meaning those molecules were not the genetic material. However, when they added DNAase, which specifically digests DNA, the transformation was completely blocked. Since all these findings together confirmed that DNA was the active hereditary molecule.